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Active straining engineering on self-assembled stacked Ni-based hybrid electrode for ultra-low overpotential

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Journal of Energy Chemistry 2023年第2期77卷 217-226,I0006页

作者： Shujie liu Rui-Ting Gao xianhu liu Xueyuan Zhang Limin Wu Lei Wang College of Chemistry and Chemical Engineering Inner Mongolia UniversityHohhot 010021Inner MongoliaChina Key Laboratory of Materials Processing and Mold Ministry of EducationZhengzhou UniversityZhengzhou 450002HenanChina State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082HunanChina Department of Materials Science State Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai 200433China

Generating sufficient strains on metal surfaces are highly challenging owing to that most metals can deform plastically to relax the strains on the surfaces.In this work,we developed a facile but highly efficient stacked deposition strategy to in situ activation and reconstruction of NiO/NiOOH on Ni matrix,following with the migration of Fe ions to NiOOH.The Fe sites on the Ni/NiO/NiOOH facilitate the formation of the stable*OH oxygenated intermediates,and the Ni matrix in the catalyst provides the catalyst excellent stability.The oxygen evolution reaction(OER)performance of the stacked NiFe-5 with compressive strain displays the strengthened binding to oxygenated intermediates and superior OER activity,the ultralow overpotentials of 162 versus reversible hydrogen electrode at 10 mA cm^(-2).On the other hand,the Ni-5 without the incorporation of Fe has shown an outstanding hydrogen evolution reaction(HER)activity,affording an overpotential of 47 mV at 10 mA cm^(-2).The NiFe-5‖Ni-5 enables the overall water splitting at a voltage of 1.508 V to achieve 20 mA cm^(-2) with remarkable durability.The stacked deposition strategy improves binding strength of Ni-based catalysts to oxygenated intermediates via generating compressive strain,causing high catalytic activities on OER and HER.

关键词： Ni-based catalysts Self-assembly stacked structure Ultra-low overpotential Water splitting

Atomically Dispersed Transition Metal-Nitrogen-Carbon Bifunctional Oxygen Electrocatalysts for Zinc-Air Batteries:Recent Advances and Future Perspectives

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Nano-Micro Letters 2022年第2期14卷 257-281页

作者： Fang Dong Mingjie Wu Zhangsen Chen xianhu liu Gaixia Zhang Jinli Qiao Shuhui Sun Institut National de La Recherche Scientifique(INRS)-CentreÉnergie Matériaux Télécommunications VarennesQC J3X 1P7Canada Key Laboratory of Materials Processing and Mold Ministry of EducationZhengzhou UniversityZhengzhou 450002People’s Republic of China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Environmental Science and EngineeringShanghai Innovation Institute for MaterialsDonghua UniversityShanghai 201620People’s Republic of China Engineering Research Center of Nano Geomaterials of Ministry of EducationChina University of GeosciencesWuhan 430074People’s Republic of China

Rechargeable zinc-air batteries(ZABs)are currently receiving extensive attention because of their extremely high theoretical specific energy density,low manufacturing costs,and environmental friendliness.Exploring bifunctional catalysts with high activity and stability to overcome sluggish kinetics of oxygen reduction reaction and oxygen evolution reaction is critical for the development of rechargeable ZABs.Atomically dispersed metal-nitrogen-carbon(M-N-C)catalysts possessing prominent advantages of high metal atom utilization and electrocatalytic activity are promising candidates to promote oxygen electrocatalysis.In this work,general principles for designing atomically dispersed M-N-C are reviewed.Then,strategies aiming at enhancing the bifunctional catalytic activity and stability are presented.Finally,the challenges and perspectives of M-N-C bifunctional oxygen catalysts for ZABs are outlined.It is expected that this review will provide insights into the targeted optimization of atomically dispersed M-N-C catalysts in rechargeable ZABs.

关键词： Atomically dispersed metal-nitrogen-carbon Oxygen evolution reaction(OER) Oxygen reduction reaction(ORR) Bifunctional oxygen electrocatalysts Zinc-air batteries(ZABs)

Ni Flower/MXene-Melamine Foam Derived 3D Magnetic/Conductive Networks for Ultra-Efficient Microwave Absorption and Infrared Stealth

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Nano-Micro Letters 2022年第4期14卷 142-157页

作者： Haoran Cheng Yamin Pan Xin Wang Chuntai liu Changyu Shen Dirk W.Schubert Zhanhu Guo xianhu liu Key Laboratory of Advanced Material Processing&Mold(Ministry of Education) National Engineering Research Center for Advanced Polymer Processing TechnologyCollege of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450002People’s Republic of China Institute of Polymer Materials Friedrich-Alexander-University Erlangen-NurembergMartensstr.791058 ErlangenGermany Integrated Composites Laboratory(ICL) Department of Chemical&Biomolecular EngineeringUniversity of TennesseeKnoxvilleTN 37996USA

The development of multifunctional and efficient electromagnetic wave absorbing materials is a challenging research hotspot.Here,the magnetized Ni flower/MXene hybrids are successfully assembled on the surface of melamine foam(MF)through electrostatic self-assembly and dip-coating adsorption process,realizing the integration of microwave absorption,infrared stealth,and flame retardant.Remarkably,the Ni/MXene-MF achieves a minimum reflection loss(RLmin)of−62.7 dB with a corresponding effective absorption bandwidth(EAB)of 6.24 GHz at 2 mm and an EAB of 6.88 GHz at 1.8 mm.Strong electromagnetic wave absorption is attributed to the three-dimensional magnetic/conductive networks,which provided excellent impedance matching,dielectric loss,magnetic loss,interface polarization,and multiple attenuations.In addition,the Ni/MXene-MF endows low density,excellent heat insulation,infrared stealth,and flame-retardant functions.This work provided a new development strategy for the design of multifunctional and efficient electromagnetic wave absorbing materials.

关键词： Ni-MXene/Melamine foam Microwave absorption Heat insulation Infrared stealth Flame-retardant

Vortex tuning magnetization configurations in porous Fe_(3)O_(4) nanotube with wide microwave absorption frequency

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Nano Research 2022年第7期15卷 6743-6750页

作者： Ruixuan Zhang Lei Wang Chunyang Xu Chongyun Liang xianhu liu Xuefeng Zhang Renchao Che Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsDepartment of Materials ScienceFudan UniversityShanghai 200438China Joint-Research Center for Computational Materials Zhejiang LaboratoryHangzhou 311100China Department of Chemistry Fudan UniversityShanghai 200433China School of Materials Science and Engineering Shanghai Institute of TechnologyShanghai 201418China Key Laboratory of Materials Processing and Mold Ministry of EducationZhengzhou UniversityZhengzhou 450002China Institute of Advanced Magnetic Materials College of Materials and Environmental EngineeringHangzhou Dianzi UniversityHangzhou 310012China

The design and optimization of one-dimension(1D)magnetic material are of great importance for the energy conversion,storage and spin electron devices,which remain a huge challenge.Herein,1D porous Fe_(3)O_(4) nanotubes(NTs)have been fabricated via a combined process of electrospinning and calcination.In the electrospinning precursors,by regulating the content ratio between two types of polyvinyl pyrrolidone with different molecular weight,porous Fe_(3)O_(4) NTs with vortex-domain configuration have been fabricated.Based on the unique 1D nanotube structure encapsulated with multi-domains,the composite Fe_(3)O_(4) NTs exhibit high complex permeability(μʹ,μʺ)values,and hold both strong magnetic storage and dissipation capacity.Our Fe_(3)O_(4) NTs exhibit excellent microwave absorption(MA)performance with the maximum reflection loss value of−57.1 dB and the efficient absorption bandwidth of 12.0 GHz.The generated magnetic vortices make the crucial contribution to the spin-wave resonance which improves the MA dissipation under high-frequency.Related magnetic flux line distribution and magnetic domain moment were confirmed by the electron holography and micro-magnetic simulation,respectively,providing the deep insight to the microwave absorption mechanism.

关键词： microwave absorption vortex domain one-dimensional structure porous structure

Mixed 2D-Dion–Jacobson/3D Sn-Pb alloyed perovskites for efficient photovoltaic solar devices

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Nano Research 2023年第2期16卷 3142-3148页

作者： Zhili Lu Chaohui Li Hongwei Lai Xinming Zhou Chunfeng Wang xianhu liu Fei Guo Caofeng Pan National Engineering Research Center for Advanced Polymer Processing Technology Key Laboratory of Advanced Material Processing&Mold(Ministry of Education)Zhengzhou UniversityZhengzhou 450002China Institute of New Energy Technology College of Information Science and TechnologyJinan UniversityGuangzhou 510632China Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesNational Center for Nanoscience and Technology(NCNST)Beijing 100083China Institute of Materials for Electronics and Energy Technology(i-MEET) Friedrich-Alexander University Erlangen-NürnbergMartensstrasse 7Erlangen 91058Germany

Tin-lead(Sn-Pb)alloyed perovskites with tunable bandgaps hold great potential for constructing highly efficient single-junction and tandem photovoltaic devices.However,the efficiency and stability of Sn-Pb perovskite solar cells(PSCs)are greatly hampered by severe nonradiative recombination due to the easy oxidation of Sn(II).In this work,we report the construction of mixed dimensional two-dimensional(2D)Dion–Jacobson(DJ)and three-dimensional(3D)perovskites to improve the efficiency and stability of Sn-Pb alloyed PSCs.Introducing a small amount of 1,4-butanediammonium diiodide as spacer cations of DJ perovskites into precursor,the prepared mixed dimensional Sn-Pb alloyed perovskites exhibit reduced trap-state density due to the passivation of 2D DJ perovskites.As a result,nonradiative charge recombination is greatly suppressed.The prepared Sn-Pb alloyed PSCs based on 2D-DJ/3D heterojunction deliver a power conversion efficiency of 19.02%with an impressive fill factor of 80%.As well,improved device stability is realized due to the presence of DJ perovskites which serves as a protection barrier against oxidation and water invasion.

关键词： Sn-Pb perovskite narrow bandgap Dion–Jacobson perovskite solar cells two-dimensional(2D)/three-dimensional(3D)

Aqueous Zn-based rechargeable batteries:Recent progress and future perspectives

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InfoMat 2022年第5期4卷 67-101页

作者： Mingjie Wu Gaixia Zhang Huaming Yang xianhu liu Marc Dubois Marc AGauthier Shuhui Sun Institut National de la Recherche Scientifique(INRS)-CentreEnergie Matériaux Télécommunications VarennesQuébecCanada Engineering Research Center of Nano-Geomaterials of Ministry of Education China University of GeosciencesWuhanChina Department of Inorganic Materials School of Minerals Processing and BioengineeringCentral South UniversityChangshaChina Key Laboratory of Materials Processing and Mold Ministry of EducationZhengzhou UniversityZhengzhouChina UniversitéClermont Auvergne CNRSSIGMA ClermontInstitut de Chimie de Clermont-FerrandClermont-FerrandFrance

Benefiting from the advantageous features of high safety,abundant reserves,low cost,and high energy density,aqueous Zn-based rechargeable batteries(AZBs)have received extensive attention as promising candidates for energy storage.To achieve high-performance AZBs with high reversibility and energy density,great efforts have been devoted to overcoming their drawbacks by focusing on the modification of electrode materials and electrolytes.Based on different cathode materials and aqueous electrolytes,the development of aqueous AZBs with different redox mechanisms are discussed in this review,including insertion/extraction chemistries(e.g.,Zn^(2+),alkali metal ion,H^(+),NH_(4)^(+),and so forth dissolution/deposition reactions(e.g.,MnO_(2)/Mn^(2+)),redox couples in flow batteries(e.g.,I_(3)/3I,Br_(2)/Br,and so forth),oxygen electrochemistry(e.g.,O_(2)/OH,O_(2)/O_(2)2),and carbon dioxide electrochemistry(e.g.,CO_(2)/CO,CO_(2)/HCOOH).In particular,the basic reaction mechanisms,issues with the Zn electrode,aqueous electrolytes,and cathode materials as well as their design strategies are systematically reviewed.Finally,the remaining challenges faced by AZBs are summarized,and perspectives for further investigations are proposed.

关键词： aqueous Zn-based rechargeable batteries hybrid battery Zn–air battery Zn–CO_(2)battery Zn-ion battery

Effect of homojunction structure in boosting sodium-ion storage: The case of MoO_(2)

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Journal of Energy Chemistry 2023年第3期78卷 115-122,I0004页

作者： Sheng Li Wei Zhang Yingxue Cui Jianmin Ma Hong-Jie Peng Jun Li xianhu liu Dickon HLNg Xinyan liu Jiabiao Lian Institute for Energy Research Jiangsu UniversityZhenjiang 212013JiangsuChina School of Physics and Electronics Hunan UniversityChangsha 410082HunanChina Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina Key Laboratory of Materials Processing&Mold(Zhengzhou University) Ministry of EducationZhengzhou UniversityZhengzhou 450002HenanChina School of Science and Engineering The Chinese University of Hong Kong(Shenzhen)LonggangShenzhen 518172GuangdongChina

High-efficiency sodium-ion batteries(SIBs) are in great demand for energy storage applications,which are dominated by the Na+storage performance of electrode materials.Here,a one-pot solvothermal method is developed to construct amorphous/crystalline MoO_(2)(a/c-MoO_(2)) homojunction for boosting Na+storage.Theoretical simulations signify that electrons redistribute at the homogenous interface of a/c-MoO_(2),resulting in an inbuilt driving force to easily adsorb charge carriers and promote the electron/ion transfer ability.Relying on its crystallographic superiorities,the a/c-MoO_(2)homojunction with high Na adsorbability(-1.61 eV) and low Na diffusion energy barrier(0.519 eV) achieves higher capacity(307 mA h g^(-1)at 0.1 A/g),better rate capability and cycling stability than either a-MoO_(2)or c-MoO_(2)counterpart.Combining in-situ X-ray diffraction(XRD) and ex-situ X-ray photoelectron spectroscopy(XPS)techniques,the ’adsorption-insertion-conversion’ mechanism is well established for Na+storage of MoO_(2).Our work opens new opportunities to optimize electrode materials via crystallographic engineering for efficient Na+storage,and helps to better understand the effects of homojunction structure in enhanced electrochemical performance.

关键词： MoO_(2)homojunction Crystallographic engineering Theoretical calculations In-situ XRD Na^(+)storage mechanism

Insights into the efficient charge separation over Nb_(2)O_(5)/2D-C_(3)N_(4) heterostructure for exceptional visible-light driven H_(2) evolution

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Journal of Energy Chemistry 2022年第2期31卷 548-555页

作者： Jia Yan Ting Wang Siyao Qiu Zhilong Song Wangqin Zhu xianhu liu Jiabiao Lian Chenghua Sun Huaming Li Key Laboratory of Zhenjiang Institute for Energy ResearchJiangsu UniversityZhenjiang 212013JiangsuChina Nanyang Environment and Water Research Institute(NEWRI) Interdisciplinary Graduate School(IGS)Nanyang Technological University50 Nanyang Avenue639798Singapore College of Chemical Engineering and Energy Technology Dongguan University of TechnologyDongguan 523808GuangdongChina Key Laboratory of Materials Processing&Mold(Zhengzhou University) Ministry of EducationZhengzhou UniversityZhengzhou 450002HenanChina Department of Chemistry and Biotechnology and Centre for Translational AtomaterialsFSETSwinburne University of TechnologyHawthornVictoria 3122 Australia

Two-dimensional carbon nitride(2 D-C_(3) N_(4))nanosheets are promising materials in photocatalytic water splitting,but still suffer from easy agglomeration and fast photogene rated electron-hole pairs recombination.To tackle this issue,herein,a hierarchical Nb_(2) O_(5)/2 D-C_(3) N_(4) heterostructure is precisely constructed and the built-in electric field between Nb_(2)O_(5) and 2 D-C_(3) N_(4) can provide the driving force to separate/transfer the charge carriers efficiently.Moreover,the strongly Lewis acidic Nb_(2)O_(5) can adsorb TEOA molecules on its surface at locally high concentrations to facilitate the oxidation reaction kinetics under irradiation,resulting in efficient photogene rated electrons-holes separation and exceptional photocatalytic hydrogen evolution.As expected,the champion Nb_(2)O_(5)/2 D-C_(3)N_(4) heterostructure achieves an exceptional H2 evolution rate of 31.6 mmol g^(-1) h^(-1),which is 213.6 times and 4.3 times higher than that of pristine Nb_(2)O_(5) and2 D-C_(3)N_(4),respectively.Moreover,the champion heterostructure possesses a high apparent quantum efficiency(AQE)of 45.08%atλ=405 nm and superior cycling stability.Furthermore,a possible photocatalytic mechanism of the energy band alignment at the hetero-interface is proposed based on the systematical characterizations accompanied by density functional theory(DFT)calculations.This work paves the way for the precise construction of a high-quality heterostructured photocatalyst with efficient charge separation to boost hydrogen production.

关键词： Interfacial engineering Nb_(2)O_(5)/2D-C_(3)N_(4)heterostructure Energy band alignment Hydrogen production Density functional theory

Engineering polarization surface of hierarchical ZnO microspheres via spray-annealing strategy for wide-frequency electromagnetic wave absorption

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Journal of Materials Science & Technology 2022年第36期131卷 231-239页

作者： Lei Wang Mengqiu Huang Xuefeng Yu Wenbin You Biao Zhao Chongyun Liang xianhu liu Xuefeng Zhang Renchao Che Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsDepartment of Materials ScienceFudan UniversityShanghai 200438China Department of Chemistry Fudan UniversityShanghai 200433China Joint-Research Center for Computational Materials Zhejiang LaboratoryHangzhou 311100China School of Materials Science and Engineering Shanghai Institute of TechnologyShanghai 201418China Key Laboratory of Materials Processing and Mold Zhengzhou UniversityMinistry of EducationZhengzhou 450002China Institute of Advanced Magnetic Materials College of Materials and EnvironmentalEngineeringHangzhou Dianzi UniversityHangzhou 310012China

Regulating orientation growth plays a dominant role in enhancing dielectric properties for the electromagnetic(EM)functional materials,which faces a huge challenge in the synthesis method.By sprayannealing strategy,hierarchical ZnO microspheres assembled by ZnO nanorods and nanoparticles were successfully fabricated.With confined microsphere space and controlling crystal growth,oriented ZnO nanorods possess rich defects,Zn-polar,O-polar faces,and high permittivity.Meanwhile,temperaturedependency of exposed polarization surfaces is discovered in the semiconductor ZnO nanoparticles with evolved aspect ratios.As pure dielectric EM wave absorption material,the hierarchical ZnO microsphere exhibits adjustable complex permittivity and polarization behaviors.When the thickness is 2.4 mm,the hierarchical ZnO-1 absorber shows the widest efficient absorption(RL≤–10 d B)region from 9.9 to18.0 GHz(8.1 GHz,^50.6%testing frequency).The minimum reflection loss(RL)of ZnO-1 can reach–31.5 d B at only 2.0 mm.Because of the outstanding dielectric loss ability and wide absorption frequency,large-scale hierarchical ZnO microspheres can be a potential EM absorption candidate.

关键词： ZnO microspheres Spray drying Electromagnetic wave absorption Orientated polarization Dielectric loss